Lenovo - 320-15ABR 15.6" Laptop battery only lasts about an hour

‎12-02-201807:16 PM

After rebooting, the battery for Lenovo - 320-15ABR 15.6" Laptop only lasts about an hour. No programs are running except those that run from reboot. When I plugged in ac then unplugged, battery time shows 18hours then after a few minutes goes back to about an hour. Does the battery need to be recalibrated somehow? also battery is internal: CPT-COS L16C2PB2. Specs hows that the battery should last about 4hrs. Laptop is AMD A12-Series - 8GB Memory - AMD Radeon R7 - 1TB Hard Drive - Platinum Gray